Camera optical lens

ABSTRACT

The present disclosure relates to the technical field of optical lens and discloses a camera optical lens. The camera optical lens includes, from an object side to an image side: a first lens, a second lens having a positive refractive power, a third lens having a negative refractive power, a fourth lens, a fifth lens and a sixth lens. The camera optical lens satisfies following conditions: 3.50≤f1/f≤7.00 and −20.00≤R9/d9≤−17.00, where f denotes a focal length of the camera optical lens; f1 denotes a focal length of the first lens; R9 denotes a curvature radius of an object-side surface of the fifth lens; and d9 denotes an on-axis thickness of the fifth lens. The camera optical lens can achieve a high imaging performance while obtaining a low TTL.

TECHNICAL FIELD

The present disclosure relates to the field of optical lens, particular,to a camera optical lens suitable for handheld devices, such as smartphones and digital cameras, and imaging devices, such as monitors or PClenses.

BACKGROUND

With the emergence of smart phones in recent years, the demand forminiature camera lens is increasing day by day, but in general thephotosensitive devices of camera lens are nothing more than ChargeCoupled Device (CCD) or Complementary Metal-Oxide Semiconductor Sensor(CMOS sensor), and as the progress of the semiconductor manufacturingtechnology makes the pixel size of the photosensitive devices becomesmaller, plus the current development trend of electronic productstowards better functions and thinner and smaller dimensions, miniaturecamera lens with good imaging quality therefore have become a mainstreamin the market. In order to obtain better imaging quality, the lens thatis traditionally equipped in mobile phone cameras adopts a three-pieceor four-piece lens structure. Also, with the development of technologyand the increase of the diverse demands of users, and as the pixel areaof photosensitive devices is becoming smaller and smaller and therequirement of the system on the imaging quality is improvingconstantly, the five-piece, six-piece and seven-piece lens structuregradually appear in lens designs. There is an urgent need for ultra-thinwide-angle camera lenses which with good optical characteristics andfully corrected chromatic aberration.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a schematic diagram of a structure of a camera optical lensaccording to Embodiment 1 of the present disclosure.

FIG. 2 is a schematic diagram of a longitudinal aberration of the cameraoptical lens shown in FIG. 1.

FIG. 3 is a schematic diagram of a lateral color of the camera opticallens shown in FIG. 1.

FIG. 4 is a schematic diagram of a field curvature and a distortion ofthe camera optical lens shown in FIG. 1.

FIG. 5 is a schematic diagram of a structure of a camera optical lensaccording to Embodiment 2 of the present disclosure.

FIG. 6 is a schematic diagram of a longitudinal aberration of the cameraoptical lens shown in FIG. 5.

FIG. 7 is a schematic diagram of a lateral color of the camera opticallens shown in FIG. 5.

FIG. 8 is a schematic diagram of a field curvature and a distortion ofthe camera optical lens shown in FIG. 5.

FIG. 9 is a schematic diagram of a structure of a camera optical lensaccording to Embodiment 3 of the present disclosure.

FIG. 10 is a schematic diagram of a longitudinal aberration of thecamera optical lens shown in FIG. 9.

FIG. 11 is a schematic diagram of a lateral color of the camera opticallens shown in FIG. 9.

FIG. 12 is a schematic diagram of a field curvature and a distortion ofthe camera optical lens shown in FIG. 9.

DESCRIPTION OF EMBODIMENTS

To make the objects, technical solutions, and advantages of the presentdisclosure clearer, embodiments of the present disclosure are describedin detail with reference to accompanying drawings in the following. Aperson of ordinary skill in the art can understand that, in theembodiments of the present disclosure, many technical details areprovided to make readers better understand the present disclosure.However, even without these technical details and any changes andmodifications based on the following embodiments, technical solutionsrequired to be protected by the present disclosure can be implemented.

Embodiment 1

Referring to the accompanying drawings, the present disclosure providesa camera optical lens 10. FIG. 1 shows the camera optical lens 10 ofEmbodiment 1 of the present disclosure, the camera optical lens 10includes six lenses. Specifically, the camera optical lens 10 includes,from an object side to an image side: an aperture S1, a first lens L1, asecond lens L2, a third lens L3, a fourth lens L4, a fifth lens L5 and asixth lens L6. An optical element such as an optical filter GF can bearranged between the sixth lens L6 and an image surface Si.

The first lens L1, the second lens L2, the third lens L3, the fourthlens L4, the fifth lens L5, and the sixth lens L6 are all made ofplastic material.

The second lens has a positive refractive power, and the third lens hasa negative refractive power.

Here, a focal length of the camera optical lens 10 is defined as f, afocal length of the first lens L1 is defined as f1, and the cameraoptical lens 10 should satisfy a condition of 3.50≤f1/f≤7.00, whichspecifies a ratio of the focal length f1 of the first lens L1 and thefocal length f of the camera optical lens 10. When the ratio exceeds thelower limit, it is advantageous for the lens to be thinned, but thepositive refractive power of the first lens L1 is too strong, and it isdifficult to correct aberrations and the like, and meanwhile, it is notconducive to the development of the lens to wide angle. On the contrary,when the upper limit value is exceeded, the positive refractive power ofthe first lens becomes too week, and it is difficult for the lens todevelop toward ultra-thinning. Preferably, the camera optical lens 10further satisfies a condition of 3.52≤f1/f≤6.94.

A curvature radius of an object-side surface of the fifth lens isdefined as R9, an on-axis thickness of the fifth lens is defined as d9,and the camera optical lens 10 further satisfies a condition of−20.00≤R9/d9≤−17.00, which specifies a ratio of the curvature radius ofthe object-side surface of the fifth lens and the on-axis thickness ofthe fifth lens, by controlling a refractive power of the fifth lens L5within a reasonable range, correction of an aberration of an opticalsystem can be facilitated.

A total optical length from an object-side surface of the first lens tothe image surface of the camera optical lens along an optical axis isdefined as TTL.

When the focal length f of the camera optical lens 10, the focal lengthf1 of the first lens L1, the curvature radius R9 of the object-sidesurface of the fifth lens L5, and the on-axis thickness d9 of the fifthlens L5 all satisfy the above conditions, the camera optical lens 10 hasan advantage of high performance and satisfies a design requirement oflow TTL.

In an embodiment, the object-side surface of the first lens L1 is convexin a paraxial region, and an image-side surface of the first lens L1 isconcave in the paraxial region, and the first lens L1 has a positiverefractive power.

A curvature radius of the object-side surface of the first lens L1 isdefined as R1, and a curvature radius of the image-side surface of thefirst lens L1 is defined as R2. The camera optical lens 10 furthersatisfies a condition of −41.24≤(R1+R2)/(R1−R2)≤−5.12. This canreasonably controls a shape of the first lens in such a manner that thefirst lens can effectively correct a spherical aberration of the cameraoptical lens. Preferably, The camera optical lens 10 further satisfies acondition of −25.77≤(R1+R2)/(R1−R2)≤−6.40.

An on-axis thickness of the first lens L1 is defined as d1, the cameraoptical lens 10 further satisfies a condition of 0.03≤d1/TTL≤0.08. Thiscan facilitate achieving ultra-thin lenses. Preferably, the cameraoptical lens 10 further satisfies a condition of 0.04≤d1/TTL≤0.06.

In an embodiment, an object-side surface of the second lens L2 is convexin the paraxial region, and an image-side surface is convex in theparaxial region.

A focal length of the second lens L2 is defined as f2, and the cameraoptical lens 10 further satisfies a condition of 0.42≤f2/f≤1.36. Bycontrolling a positive refractive power of the second lens L2 within areasonable range, correction of the aberration of the optical system canbe facilitated. Preferably, the camera optical lens 10 further satisfiesa condition of 0.67≤f2/f≤1.09.

A curvature radius of the object-side surface of the second lens L2 isdefined as R3, a curvature radius of the image-side surface of thesecond lens L2 is defined as R4, and the camera optical lens 10 furthersatisfies a condition of −0.42≤(R3+R4)/(R3−R4)≤−0.02, which specifies ashape of the second lens L2. Within this range, a development towardsultra-thin and wide-angle lenses would facilitate correcting the problemof an on-axis aberration. Preferably, the camera optical lens 10 furthersatisfies a condition of −0.27≤(R3+R4)/(R3−R4)≤−0.03.

An on-axis thickness of the second lens L2 is defines as d3, and thecamera optical lens 10 further satisfies a condition of0.06≤d3/TTL≤0.20. This can facilitate achieving ultra-thin lenses.Preferably, the camera optical lens 10 further satisfies a condition of0.10≤d3/TTL≤0.16.

In an embodiment, an object-side surface of the third lens L3 is convexin the paraxial region, and an image-side surface is concave in theparaxial region.

A focal length of the third lens L3 is defined as f3, and the cameraoptical lens 10 further satisfies a condition of −2.93≤f3/f≤−0.93. Anappropriate distribution of the refractive power leads to a betterimaging quality and a lower sensitivity. Preferably, the camera opticallens 10 further satisfies a condition of −1.83≤f3/f≤−1.16.

A curvature radius of the object-side surface of the third lens L3 isdefined as R5, a curvature radius of the image-side surface of the thirdlens L3 is defined as R6, and the camera optical lens 10 furthersatisfies a condition of 1.23≤(R5+R6)/(R5−R6)≤3.88. This can effectivelycontrol a shape of the third lens L3, thereby facilitating shaping ofthe third lens and avoiding bad shaping and generation of stress due toan the overly large surface curvature of the third lens L3. Preferably,the camera optical lens 10 further satisfies a condition of1.97≤(R5+R6)/(R5−R6)≤3.10.

An on-axis thickness of the third lensL 3 is defined as d5, and thecamera optical lens 10 further satisfies a condition of0.03≤d5/TTL≤0.10. This can facilitate achieving ultra-thin lenses.Preferably, the camera optical lens 10 further satisfies a condition of0.05≤d5/TTL≤0.08.

In an embodiment, an object-side surface of the fourth lens L4 isconcave in the paraxial region, and an image-side surface of the fourthlens L4 is convex in the paraxial region, and the fourth lens L4 has anegative refractive power.

A focal length of the fourth lens L4 is defined as f4, and the cameraoptical lens 10 further satisfies a condition of −7.41≤f4/f≤−1.68. Theappropriate distribution of the refractive power leads to a betterimaging quality and a lower sensitivity. Preferably, the camera opticallens 10 further satisfies a condition of −4.63≤f4/f≤−2.10.

A curvature radius of the object-side surface of the fourth lens L4 isdefined as R7, a curvature radius of the image-side surface of thefourth lens L4 is defined as R8, and the camera optical lens 10 furthersatisfies a condition of −5.08≤(R7+R8)/(R7−R8)≤−1.57, which specifies ashape of the fourth lens L4. Within this range, a development towardsultra-thin and wide-angle lens would facilitate correcting a problem ofthe off-axis aberration. Preferably, the camera optical lens 10 furthersatisfies a condition of −3.17≤(R7+R8)/(R7−R8)≤−1.97.

An on-axis thickness of the fourth lens L4 is defined as d7, and thecamera optical lens 10 further satisfies a condition of0.03≤d7/TTL≤0.10. This can facilitate achieving ultra-thin lenses.Preferably, the camera optical lens 10 further satisfies a condition of0.05≤d7/TTL≤0.08.

In an embodiment, the object-side surface of the fifth lens L5 isconcave in the paraxial region, and an image-side surface of the fifthlens L5 is convex in the paraxial region, and the fifth lens L5 has apositive refractive power.

A focal length of the fifth lens L5 is defined as f5, and the cameraoptical lens 10 further satisfies a condition of 0.33≤f5/f≤1.01, whichcan effectively make a light angle of the camera lens gentle and reducetolerance sensitivity. Preferably, the camera optical lens 10 furthersatisfies a condition of 0.52≤f5/f≤0.81.

A curvature radius of the object-side surface of the fifth lens L5 isdefined as R9, a curvature radius of the image-side surface of the fifthlens L5 is defined as R10, and the camera optical lens 10 furthersatisfies a condition of 0.62≤(R9+R10)/(R9-R10)≤1.96, which specifies ashape of the fifth lens L5. Within this range, a development towardsultra-thin and wide-angle lenses can facilitate correcting a problem ofthe off-axis aberration. Preferably, the camera optical lens 10 furthersatisfies a condition of 0.99≤(R9+R10)/(R9-R10)≤1.57.

An on-axis thickness of the fifth lens L5 is defined as d9, and thecamera optical lens 10 further satisfies a condition of0.06≤d9/TTL≤0.17. This can facilitate achieving ultra-thin lenses.Preferably, the camera optical lens 10 further satisfies a condition of0.09≤d9/TTL≤0.14.

In an embodiment, an object-side surface of the sixth lens L6 is concavein the paraxial region, and an image-side surface of the sixth lens L6is concave in the paraxial region, and the sixth lens L6 has a negativerefractive power.

A focal length of the sixth lens L6 is defined as f6, and the cameraoptical lens 10 further satisfies a condition of −1.39≤f6/f≤−0.46. Theappropriate distribution of the refractive power leads to the betterimaging quality and lower sensitivity. Preferably, the camera opticallens 10 further satisfies a condition of −0.87≤f6/f≤−0.57.

A curvature radius of the object-side surface of the sixth lens L6 isdefined as R11, a curvature radius of the image-side surface of thesixth lens L6 is defined as R12, and the camera optical lens 10 furthersatisfies a condition of 0.38≤(R11+R12)/(R11−R12)≤1.20, which specifiesa shape of the sixth lens L6. Within this range, a development towardsultra-thin and wide-angle lenses would facilitate correcting a problemof the off-axis aberration. Preferably, the camera optical lens 10further satisfies a condition of 0.60≤(R11+R12)/(R11−R12)≤0.96.

An on-axis thickness of the sixth lens L6 is defined as d11, and thecamera optical lens 10 further satisfies a condition of0.04≤d11/TTL≤0.11. This can facilitate achieving ultra-thin lenses.Preferably, the camera optical lens 10 further satisfies a condition of0.06≤d11/TTL≤0.09.

In an embodiment, a combined focal length of the first lens and of thesecond lens is defined as f12, and the camera optical lens 10 furthersatisfies a condition of 0.38≤f12/f≤1.17. This can eliminate theaberration and distortion of the camera optical lens and reduce a backfocal length of the camera optical lens, thereby maintainingminiaturization of an imaging lens system group. Preferably, the cameraoptical lens 10 further satisfies a condition of 0.61≤f12/f≤0.94.

In an embodiment, the total optical length TTL of the camera opticallens 10 is less than or equal to 5.29 mm, which is beneficial forachieving ultra-thin lenses. Preferably, the total optical length TTL ofthe camera optical lens 10 is less than or equal to 5.05 mm.

In an embodiment, an F number of the camera optical lens 10 is less thanor equal to 2.09. The camera optical lens has a large aperture and abetter imaging performance. Preferably, the F number of the cameraoptical lens 10 is less than or equal to 2.05.

With such designs, the total optical length TTL of the camera opticallens 10 can be made as short as possible, thus the miniaturizationcharacteristics can be maintained.

In the following, examples will be used to describe the camera opticallens 10 of the present disclosure. The symbols recorded in each examplewill be described as follows. The focal length, on-axis distance,curvature radius, on-axis thickness, inflexion point position, andarrest point position are all in units of mm.

TTL: Optical length (the total optical length from the object-sidesurface of the first lens to the image surface of the camera opticallens along the optical axis) in mm.

Preferably, inflexion points and/or arrest points can be arranged on theobject-side surface and/or the image-side surface of the lens, so as tosatisfy the demand for high quality imaging. The description below canbe referred for specific implementations.

The design data of the camera optical lens 10 in Embodiment 1 of thepresent disclosure are shown in Table 1 and Table 2.

TABLE 1 R d nd vd S1 ∞ d0= −0.045 R1 2.364 d1= 0.254 nd1 1.6713 v1 19.24R2 3.072 d2= 0.033 R3 3.479 d3= 0.640 nd2 1.5449 v2 55.93 R4 −3.709 d4=0.030 R5 4.441 d5= 0.315 nd3 1.6713 v3 19.24 R6 1.964 d6= 0.482 R7−3.591 d7= 0.317 nd4 1.6510 v4 21.51 R8 −8.872 d8= 0.157 R9 −11.142 d9=0.557 nd5 1.5449 v5 55.93 R10 −1.205 d10=  0.591 R11 −11.483 d11=  0.342nd6 1.5449 v6 55.93 R12 1.609 d12=  0.754 R13 ∞ d13=  0.210 ndg 1.5168vg 64.17 R14 ∞ d14=  0.100

In the table, meanings of various symbols will be described as follows.

S1: aperture;

R: curvature radius of an optical surface, a central curvature radiusfor a lens;

R1: curvature radius of the object-side surface of the first lens L1;

R2: curvature radius of the image-side surface of the first lens L1;

R3: curvature radius of the object-side surface of the second lens L2;

R4: curvature radius of the image-side surface of the second lens L2;

R5: curvature radius of the object-side surface of the third lens L3;

R6: curvature radius of the image-side surface of the third lens L3;

R7: curvature radius of the object-side surface of the fourth lens L4;

R8: curvature radius of the image-side surface of the fourth lens L4;

R9: curvature radius of the object-side surface of the fifth lens L5;

R10: curvature radius of the image-side surface of the fifth lens L5;

R11: curvature radius of the object-side surface of the sixth lens L6;

R12: curvature radius of the image-side surface of the sixth lens L6;

R13: curvature radius of an object-side surface of the optical filterGF;

R14: curvature radius of an image-side surface of the optical filter GF;

d: on-axis thickness of a lens and an on-axis distance between lens;

d0: on-axis distance from the aperture S1 to the object-side surface ofthe first lens L1;

d1: on-axis thickness of the first lens L1;

d2: on-axis distance from the image-side surface of the first lens L1 tothe object-side surface of the second lens L2;

d3: on-axis thickness of the second lens L2;

d4: on-axis distance from the image-side surface of the second lens L2to the object-side surface of the third lens L3;

d5: on-axis thickness of the third lens L3;

d6: on-axis distance from the image-side surface of the third lens L3 tothe object-side surface of the fourth lens L4;

d7: on-axis thickness of the fourth lens L4;

d8: on-axis distance from the image-side surface of the fourth lens L4to the object-side surface of the fifth lens L5;

d9: on-axis thickness of the fifth lens L5;

d10: on-axis distance from the image-side surface of the fifth lens L5to the object-side surface of the sixth lens L6;

d11: on-axis thickness of the sixth lens L6;

d12: on-axis distance from the image-side surface of the sixth lens L6to the object-side surface of the optical filter GF;

d13: on-axis thickness of the optical filter GF;

d14: on-axis distance from the image-side surface to the image surfaceof the optical filter GF;

nd: refractive index of the d line;

nd1: refractive index of the d line of the first lens L1;

nd2: refractive index of the d line of the second lens L2;

nd3: refractive index of the d line of the third lens L3;

nd4: refractive index of the d line of the fourth lens L4;

nd5: refractive index of the d line of the fifth lens L5;

nd6: refractive index of the d line of the sixth lens L6;

ndg: refractive index of the d line of the optical filter GF;

vd: abbe number;

v1: abbe number of the first lens L1;

v2: abbe number of the second lens L2;

v3: abbe number of the third lens L3;

v4: abbe number of the fourth lens L4;

v5: abbe number of the fifth lens L5;

v6: abbe number of the sixth lens L6;

vg: abbe number of the optical filter GF.

Table 2 shows aspherical surface data of the camera optical lens 10 inEmbodiment 1 of the present disclosure.

TABLE 2 Conic coefficient Aspheric surface coefficients k A4 A6 A8 A10A12 A14 A16 R1 −1.7845E+00  −5.9778E−02 −1.4968E−01 2.1117E−01−6.9214E−02  −5.7631E−01   9.1222E−01 −4.0878E−01  R2 5.7900E−01−8.8263E−02 −4.4870E−02 2.3874E−03 −2.3446E−02  1.7628E−02  3.7807E−02−3.4845E−02  R3 5.8839E+00  1.8581E−02  5.9150E−02 −6.2679E−02 3.9343E−02 1.3925E−02 −2.9391E−02 1.0210E−02 R4 1.2066E+00  8.3216E−03−2.3559E−02 3.8779E−02 9.7102E−03 7.7071E−04 −1.5080E−02 1.0647E−02 R50.0000E+00 −1.0772E−01 −4.2994E−02 1.0471E−02 1.8769E−02 5.8492E−03−1.9214E−02 1.2523E−02 R6 −5.2460E+00   4.9374E−03 −3.7826E−022.4473E−02 1.2736E−02 −7.9028E−03  −1.1559E−02 7.5471E−03 R7−2.7808E+00  −1.2022E−01  5.6867E−02 1.9997E−03 −5.8567E−03  7.1402E−03 1.9242E−02 −1.5263E−02  R8 0.0000E+00 −1.9953E−01  2.1603E−021.3353E−02 1.0355E−04 3.7812E−04  1.7960E−03 1.4607E−03 R9 3.3634E+01−1.0309E−01 −3.6067E−02 2.8237E−02 2.6773E−03 −4.2425E−03  −1.4493E−037.2644E−04 R10 −3.1496E+00  −4.2259E−02  2.2145E−02 −1.9663E−03 −2.0295E−03  4.5250E−04  3.5686E−04 −1.2055E−04  R11 0.0000E+00−3.6556E−02  8.3083E−03 −6.5638E−04  3.0674E−05 −1.4048E−06  −1.1417E−071.5284E−08 R12 −7.9388E+00  −3.5196E−02  5.7541E−03 −7.4353E−04 3.5070E−05 −4.3467E−07  −8.2759E−08 1.2177E−08

Here, K is a conic coefficient, and A4, A6, A8, A10, A12, A14, and A16are aspheric surface coefficients.

IH: Image height

y=(x ² /R)/[1+{1−(k+1)(x ² /R ²)}^(1/2)]+A4x ⁴ +A6x ⁶ +A8x ⁸ +A10x ¹⁰+A12x ¹² +A14x ¹⁻⁴ +A16x ¹⁶  (1)

For convenience, an aspheric surface of each lens surface uses theaspheric surfaces shown in the above formula (1). However, the presentdisclosure is not limited to the aspherical polynomials form shown inthe formula (1).

Table 3 and Table 4 show design data of inflexion points and the arrestpoint of the camera optical lens 10 according to Embodiment 1 of thepresent disclosure. P1R1 and P1R2 represent the object-side surface andthe image-side surface of the first lens L1, P2R1 and P2R2 represent theobject-side surface and the image-side surface of the second lens L2,P3R1 and P3R2 represent the object-side surface and the image-sidesurface of the third lens L3, P4R1 and P4R2 represent the object-sidesurface and the image-side surface of the fourth lens L4, P5R1 and P5R2represent the object-side surface and the image-side surface of thefifth lens L5, P6R1 and P6R2 represent the object-side surface and theimage-side surface of the sixth lens L6. The data in the column named“inflexion point position” refer to vertical distances from inflexionpoints arranged on each lens surface to the optical axis of the cameraoptical lens 10. The data in the column named “arrest point position”refer to vertical distances from arrest points arranged on each lenssurface to the optical axis of the camera optical lens 10.

TABLE 3 Number of Inflexion Inflexion inflexion points point position 1point position 2 P1R1 1 0.535 P1R2 1 0.505 P2R1 0 P2R2 1 0.775 P3R1 20.395 0.995 P3R2 0 P4R1 2 0.895 1.075 P4R2 1 1.035 P5R1 0 P5R2 2 1.2351.455 P6R1 1 1.725 P6R2 2 0.715 2.865

TABLE 4 Number of arrest point Arrest point position 1 P1R1 1 0.845 P1R21 0.805 P2R1 0 P2R2 1 1.015 P3R1 1 0.665 P3R2 0 P4R1 0 P4R2 0 P5R1 0P5R2 0 P6R1 1 2.675 P6R2 1 1.605

FIG. 2 and FIG. 3 illustrate a longitudinal aberration and a lateralcolor with wavelengths of 470.0 nm, 550.0 nm and 650.0 nm after passingthe camera optical lens 10 according to Embodiment 1, respectively. FIG.4 illustrates a field curvature and a distortion with a wavelength of550.0 nm after passing the camera optical lens 10 according toEmbodiment 1. A field curvature S in FIG. 4 is a field curvature in asagittal direction, and T is a field curvature in a tangentialdirection.

Table 13 shows various values of Embodiments 1, 2, 3 and valuescorresponding to parameters which are specified in the above conditions.

As shown in Table 13, Embodiment 1 satisfies the above conditions.

In an Embodiment, an entrance pupil diameter of the camera optical lensis 1.836 mm, an image height of 1.0H is 3.284 mm, an FOV (field of view)in a diagonal direction is 81.71°. Thus, the camera optical lens has awide-angle and is ultra-thin. Its on-axis and off-axis aberrations arefully corrected, thereby achieving excellent optical characteristics.

Embodiment 2

Embodiment 2 is basically the same as Embodiment 1 and involves symbolshaving the same meanings as Embodiment 1, and only differencestherebetween will be described in the following.

Table 5 and Table 6 show design data of a camera optical lens 20 inEmbodiment 2 of the present disclosure.

TABLE 5 R d nd v d S1 ∞ d0= −0.045 R1 2.338 d1= 0.255 nd1 1.6713 v 119.24 R2 2.731 d2= 0.033 R3 3.064 d3= 0.624 nd2 1.5449 v 2 55.93 R4−3.763 d4= 0.030 R5 4.553 d5= 0.332 nd3 1.6713 v 3 19.24 R6 1.926 d6=0.420 R7 −4.633 d7= 0.335 nd4 1.6510 v 4 21.51 R8 −10.745 d8= 0.223 R9−9.805 d9= 0.530 nd5 1.5449 v 5 55.93 R10 −1.219 d10=  0.599 R11 −12.827d11=  0.336 nd6 1.5449 v 6 55.93 R12 1.589 d12=  0.773 R13 ∞ d13=  0.210ndg 1.5168 v g 64.17 R14 ∞ d14=  0.100

Table 6 shows aspherical surface data of each lens of the camera opticallens 20 in Embodiment 2 of the present disclosure.

TABLE 6 Conic coefficient Aspheric surface coefficients k A4 A6 A8 A10A12 A14 A16 R1 −1.8853E+00 −6.2092E−02 −1.5001E−01  2.1152E−01−5.4700E−02  −5.8307E−01  8.7660E−01 −3.8259E−01  R2 −1.5338E−01−9.5298E−02 −4.7502E−02 −4.0168E−03 −3.0629E−02   1.9676E−02  4.4363E−02−3.7900E−02  R3  4.5714E+00  1.8769E−02  5.0178E−02 −6.4702E−024.1753E−02  1.6851E−02 −2.7134E−02 8.0862E−03 R4  5.9814E−01  9.8523E−03−2.0718E−02  5.4050E−02 3.7532E−03 −3.9206E−03 −1.6768E−02 1.6745E−02 R5 0.0000E+00 −1.2346E−01 −3.8428E−02 −1.2400E−03 1.1970E−02  1.0118E−02−1.1331E−02 1.0930E−02 R6 −6.0274E+00  8.3712E−03 −3.8981E−02 2.3652E−02 3.7516E−03  2.0542E−04 −9.9248E−03 4.8641E−03 R7 −1.4960E+00−1.2136E−01  7.6473E−02  1.1444E−02 −9.1784E−03  −1.9067E−03  1.6361E−02−1.0987E−02  R8  0.0000E+00 −1.9334E−01  3.3874E−02  1.0988E−02−8.8436E−04  −1.2974E−03  1.6568E−03 1.8603E−03 R9 −2.3976E+01−8.9967E−02 −4.0077E−02  2.5999E−02 1.3918E−03 −4.5843E−03 −9.8617E−047.7752E−04 R10 −3.2991E+00 −4.4661E−02  2.2188E−02 −2.3403E−03−1.4287E−03   4.1670E−04  3.4857E−04 −1.2378E−04  R11  0.0000E+00−3.5594E−02  8.1666E−03 −6.5890E−04 3.0898E−05 −1.2802E−06 −1.1405E−071.4593E−08 R12 −7.7488E+00 −3.5374E−02  5.9503E−03 −7.6318E−043.6738E−05 −2.9972E−07 −9.0410E−08 1.1107E−08

Table 7 and table 8 show design data of inflexion points and arrestpoint of each lens of the camera optical lens 20 lens according toEmbodiment 2 of the present disclosure.

TABLE 7 Number of Inflexion Inflexion inflexion points point position 1point position 2 P1R1 1 0.535 P1R2 1 0.505 P2R1 0 P2R2 1 0.725 P3R1 20.375 0.985 P3R2 0 P4R1 2 0.835 1.085 P4R2 1 1.025 P5R1 0 P5R2 2 1.1751.505 P6R1 1 1.715 P6R2 2 0.715 2.865

TABLE 8 Number of arrest point Arrest point position 1 P1R1 1 0.835 P1R21 0.805 P2R1 0 P2R2 1 0.965 P3R1 1 0.625 P3R2 0 P4R1 0 P4R2 0 P5R1 0P5R2 0 P6R1 1 2.625 P6R2 1 1.635

FIG. 6 and FIG. 7 illustrate a longitudinal aberration and a lateralcolor of light with wavelengths of 470.0 nm, 550.0 nm and 650.0 nm afterpassing the camera optical lens 20 according to Embodiment 2. FIG. 8illustrates a field curvature and a distortion of light with awavelength of 550.0 nm after passing the camera optical lens 20according to Embodiment 2.

As shown in Table 13, Embodiment 2 satisfies the above conditions.

In an embodiment, an entrance pupil diameter of the camera optical lensis 1.839 mm, an image height of 1.0H is 3.284 mm, an FOV (field of view)in the diagonal direction is 81.61°. Thus, the camera optical lens has awide-angle and is ultra-thin. Its on-axis and off-axis aberrations arefully corrected, thereby achieving excellent optical characteristics.

Embodiment 3

Embodiment 3 is basically the same as Embodiment 1 and involves symbolshaving the same meanings as Embodiment 1, and only differencestherebetween will be described in the following.

Table 9 and Table 10 show design data of a camera optical lens 30 inEmbodiment 3 of the present disclosure.

TABLE 9 R d nd v d S1 ∞ d0= −0.045 R1 2.322 d1= 0.256 nd1 1.6713 v 119.24 R2 2.559 d2= 0.033 R3 2.722 d3= 0.623 nd2 1.5449 v 2 55.93 R4−4.188 d4= 0.030 R5 4.265 d5= 0.315 nd3 1.6713 v 3 19.24 R6 1.887 d6=0.412 R7 −5.039 d7= 0.337 nd4 1.6510 v 4 21.51 R8 −11.590 d8= 0.237 R9−9.267 d9= 0.541 nd5 1.5449 v 5 55.93 R10 −1.228 d10=  0.609 R11 −14.158d11=  0.338 nd6 1.5449 v 6 55.93 R12 1.592 d12=  0.770 R13 ∞ d13=  0.210ndg 1.5168 v g 64.17 R14 ∞ d14=  0.100

Table 10 shows aspherical surface data of each lens of the cameraoptical lens 30 in Embodiment 3 of the present disclosure.

TABLE 10 Conic coefficient Aspherical surface coefficients k A4 A6 A8A10 A12 A14 A16 R1 −1.6299E+00 −6.7440E−02 −1.1322E−01 1.1100E−017.2736E−02 −5.8727E−01  7.5704E−01 −3.1344E−01  R2 −1.6751E+00−9.8110E−02 −4.3004E−02 −6.6751E−03  −2.6977E−02   2.2147E−02 3.9799E−02 −3.6010E−02  R3  2.6189E+00  9.4172E−03  3.9512E−02−3.8203E−02  2.2503E−02  2.1026E−02 −2.3315E−02 7.7384E−03 R4−1.6514E−01  6.5485E−03 −2.1513E−02 5.4732E−02 1.0738E−03 −8.6571E−03−2.0577E−02 2.7121E−02 R5  0.0000E+00 −1.2964E−01 −4.4834E−02 4.1056E−033.5619E−04  1.9441E−02 −6.7712E−03 7.8791E−03 R6 −6.0049E+00  1.0699E−02−4.1255E−02 2.4061E−02 6.2012E−03  9.9436E−04 −1.0523E−02 5.1223E−03 R7 9.1609E−01 −1.2271E−01  8.4702E−02 1.0503E−02 −1.2677E−02  −2.9016E−03 1.7969E−02 −9.9329E−03  R8  0.0000E+00 −1.8921E−01  3.6638E−021.0194E−02 −1.9979E−03  −1.8076E−03  1.5370E−03 2.2296E−03 R9−2.0841E+01 −8.1389E−02 −3.9155E−02 2.4893E−02 6.1354E−04 −4.2216E−03−5.7701E−04 5.8132E−04 R10 −3.3419E+00 −4.5509E−02  2.2366E−02−2.2879E−03  −1.4368E−03   4.4046E−04  3.4840E−04 −1.3832E−04  R11 0.0000E+00 −3.5491E−02  8.1629E−03 −6.6433E−04  2.9924E−05 −1.3414E−06−1.1038E−07 1.6189E−08 R12 −7.6595E+00 −3.4199E−02  5.8406E−03−7.6452E−04  3.8189E−05 −2.9308E−07 −9.6679E−08 1.0019E−08

Table 11 and Table 12 show design data inflexion points and arrestpoints of the respective lenses in the camera optical lens 30 accordingto Embodiment 3 of the present disclosure.

TABLE 11 Number of Inflexion Inflexion inflexion points point position 1point position 2 P1R1 1 0.545 P1R2 1 0.495 P2R1 0 P2R2 1 0.725 P3R1 20.375 0.975 P3R2 0 P4R1 1 0.825 P4R2 1 1.025 P5R1 0 P5R2 2 1.185 1.435P6R1 1 1.715 P6R2 2 0.725 2.905

TABLE 12 Number of arrest point Arrest point position 1 P1R1 1 0.855P1R2 1 0.805 P2R1 0 P2R2 1 0.955 P3R1 1 0.625 P3R2 0 P4R1 0 P4R2 0 P5R10 P5R2 0 P6R1 1 2.695 P6R2 1 1.665

FIG. 10 and FIG. 11 illustrate a longitudinal aberration and a lateralcolor of light with wavelengths of 470.0 nm, 550.0 nm and 650.0 nm afterpassing the camera optical lens 30 according to Embodiment 3. FIG. 12illustrates a field curvature and a distortion of light with awavelength of 550.0 nm after passing the camera optical lens 30according to Embodiment 3.

Table 13 in the following lists values corresponding to the respectiveconditions in an embodiment according to the above conditions.Obviously, the embodiment satisfies the above conditions.

In an embodiment, an entrance pupil diameter of the camera optical lensis 1.842 mm, an image height of 1.0H is 3.284 mm, an FOV (field of view)in the diagonal direction is 81.71°. Thus, the camera optical lens has awide-angle and is ultra-thin. Its on-axis and off-axis aberrations arefully corrected, thereby achieving excellent optical characteristics.

TABLE 13 Parameters and conditions Embodiment 1 Embodiment 2 Embodiment3 f 3.727 3.733 3.739 f1 13.191 18.980 25.733 f2 3.388 3.191 3.115 f3−5.468 −5.184 −5.267 f4 −9.401 −12.668 −13.846 f5 2.423 2.491 2.528 f6−2.556 −2.564 −2.596 f12 2.835 2.868 2.915 FNO 2.03 2.03 2.03 f1/f 3.545.08 6.88 R9/d9 −20.00 −18.50 −17.13

It can be appreciated by one having ordinary skill in the art that thedescription above is only embodiments of the present disclosure. Inpractice, one having ordinary skill in the art can make variousmodifications to these embodiments in forms and details withoutdeparting from the scope of the present disclosure.

What is claimed is:
 1. A camera optical lens comprising, from an objectside to an image side: a first lens; a second lens having a positiverefractive power; a third lens having a negative refractive power; afourth lens; a fifth lens; and a sixth lens; wherein the camera opticallens satisfies following conditions:3.50≤f1/f≤7.00; and−20.00≤R9/d9≤−17.00; where f denotes a focal length of the cameraoptical lens; f1 denotes a focal length of the first lens; R9 denotes acurvature radius of an object-side surface of the fifth lens; and d9denotes an on-axis thickness of the fifth lens.
 2. The camera opticallens according to claim 1 further satisfying following conditions:3.52≤f1/f≤6.94.
 3. The camera optical lens according to claim 1, whereinthe first lens has a positive refractive power, and comprises anobject-side surface being convex in a paraxial region and an image-sidesurface being concave in the paraxial region; and the camera opticallens further satisfies following conditions:−41.24≤(R1+R2)/(R1−R2)≤−5.12; and0.03≤d1/TTL≤0.08; where R1 denotes a curvature radius of the object-sidesurface of the first lens; R2 denotes a curvature radius of theimage-side surface of the first lens; d1 denotes an on-axis thickness ofthe first lens; and TTL denotes a total optical length from theobject-side surface of the first lens to an image surface of the cameraoptical lens along an optical axis.
 4. The camera optical lens accordingto claim 3, wherein the camera optical lens further satisfies followingconditions:−25.77≤(R1+R2)/(R1−R2)≤−6.40; and0.04≤d1/TTL≤0.06.
 5. The camera optical lens according to claim 1,wherein the second lens comprises an object-side surface being convex inthe paraxial region and an image-side surface being convex in theparaxial region; and the camera optical lens further satisfies followingconditions:0.42≤f2/f≤1.36;−0.42≤(R3+R4)/(R3−R4)≤−0.02; and0.06≤d3/TTL≤0.20; where f2 denotes a focal length of the second lens; R3denotes a curvature radius of the object-side surface of the secondlens; R4 denotes a curvature radius of the image-side surface of thesecond lens; d3 denotes an on-axis thickness of the second lens; and TTLdenotes a total optical length from an object-side surface of the firstlens to an image surface of the camera optical lens along an opticalaxis.
 6. The camera optical lens according to claim 5 further satisfyingfollowing conditions:0.67≤f2/f≤1.09;−0.27≤(R3+R4)/(R3−R4)≤−0.03; and0.10≤d3/TTL≤0.16.
 7. The camera optical lens according to claim 1,wherein the third lens comprises an object-side surface being convex inthe paraxial region and an image-side surface being concave in theparaxial region, and the camera optical lens further satisfies followingconditions:−2.93≤f3/f≤−0.93;1.23≤(R5+R6)/(R5−R6)≤3.88; and0.03≤d5/TTL≤0.10; where f3 denotes a focal length of the third lens; R5denotes a curvature radius of the object-side surface of the third lens;R6 denotes a curvature radius of the image-side surface of the thirdlens; d5 denotes an on-axis thickness of the third lens; and TTL denotesa total optical length from an object-side surface of the first lens toan image surface of the camera optical lens along an optical axis. 8.The camera optical lens according to claim 7 further satisfyingfollowing conditions:−1.83≤f3/f≤−1.16;1.97≤(R5+R6)/(R5−R6)≤3.10; and0.05≤d5/TTL≤0.08.
 9. The camera optical lens according to claim 1,wherein the fourth lens has a negative refractive power, and comprisesan object-side surface being concave in the paraxial region and animage-side surface being convex in the paraxial region, and the cameraoptical lens further satisfies following conditions:−7.41≤f4/f≤−1.68;−5.08≤(R7+R8)/(R7−R8)≤−1.57; and0.03≤d7/TTL≤0.10; where f4 denotes a focal length of the fourth lens; R7denotes a curvature radius of the object-side surface of the fourthlens; R8 denotes a curvature radius of the image-side surface of thefourth lens; d7 denotes an on-axis thickness of the fourth lens; and TTLdenotes a total optical length from an object-side surface of the firstlens to an image surface of the camera optical lens along an opticalaxis.
 10. The camera optical lens according to claim 9 furthersatisfying following conditions:−4.63≤f4/f≤−2.10;−3.17≤(R7+R8)/(R7−R8)≤−1.97; and0.05≤d7/TTL≤0.08.
 11. The camera optical lens according to claim 1,wherein the fifth lens has a positive refractive power, and theobject-side surface of the fifth lens is concave in the paraxial regionand an image-side surface of the fifth lens is convex in the paraxialregion, and the camera optical lens further satisfies followingconditions:0.33≤f5/f≤1.01;0.62≤(R9+R10)/(R9−R10)≤1.96; and0.06≤d9/TTL≤0.17; where f5 denotes a focal length of the fifth lens; R10denotes a curvature radius of the image-side surface of the fifth lens;and TTL denotes a total optical length from an object-side surface ofthe first lens to an image surface of the camera optical lens along anoptical axis.
 12. The camera optical lens according to claim 11 furthersatisfying following conditions:0.52≤f5/f≤0.81;0.99≤(R9+R10)/(R9−R10)≤1.57; and0.09≤d9/TTL≤0.14.
 13. The camera optical lens according to claim 1,wherein the sixth lens has a negative refractive power, and comprises anobject-side surface being concave in the paraxial region and animage-side surface being concave in the paraxial region, and the cameraoptical lens further satisfies following conditions:−1.39≤f6/f≤−0.46;0.38≤(R11+R12)/(R11−R12)≤1.20; and0.04≤d11/TTL≤0.11; where f6 denotes a focal length of the sixth lens;R11 denotes a curvature radius of the object-side surface of the sixthlens; R12 denotes a curvature radius of the image-side surface of thesixth lens; d11 denotes an on-axis thickness of the sixth lens; and TTLdenotes a total optical length from an object-side surface of the firstlens to an image surface of the camera optical lens along an opticalaxis.
 14. The camera optical lens according to claim 13 furthersatisfying following conditions:−0.87≤f6/f≤−0.57;0.60≤(R11+R12)/(R11−R12)≤0.96; and0.06≤d11/TTL≤0.09.
 15. The camera optical lens according to claim 1further satisfying following condition:0.38≤f12/f≤1.17; where f12 denotes a combined focal length of the firstlens and the second lens.
 16. The camera optical lens according to claim15 further satisfying following condition:0.61≤f12/f≤0.94.
 17. The camera optical lens according to claim 1, wherea total optical length TTL from an object-side surface of the first lensto an image surface of the camera optical lens along an optical axis isless than or equal to 5.29 mm.
 18. The camera optical lens according toclaim 17, wherein the total optical length TTL of the camera opticallens is less than or equal to 5.05 mm.
 19. The camera optical lensaccording to claim 1, wherein an F number of the camera optical lens isless than or equal to 2.09.
 20. The camera optical lens according toclaim 19, wherein the F number of the camera optical lens is less thanor equal to 2.05.